Simplified pressure limiting valve structure

Abstract

The utility model provides a simplified pressure-limiting valve structure, belongs to the field of pressure-limiting valves, aims to solve the problem that a spring is in an abnormal working state, and comprises a valve body and a valve element, the valve element is arranged in the valve body, and a first exhaust hole is formed in the valve element. The device is provided with a ball valve; according to the simplified structure, the ball valve is mainly used for replacing a plug, the hole plugging effect on the valve body is achieved, the working length of the compression spring can be controlled by changing the press-fitting distance, the ball valve is a standard part, the technology is mature, redevelopment is not needed, the universality is high, and the plug needs to be redeveloped to adapt to different working conditions. The reliability verification process is long, when the spherical surface of the ball valve makes contact with the compression spring, the stress direction of the compression spring can be automatically aligned, the situation that the compression spring is stressed obliquely is avoided, ball valve parts and the corresponding first exhaust holes can keep the high cleanliness level, and chippings are not likely to be generated in the machining, transporting and assembling processes.

Description

Technical Field

[0001] The utility model relates to the field of pressure limiting valves, and more specifically, to a simplified structure of a pressure limiting valve. Background Technique

[0002] A pressure limiting valve is a key component used to control the pressure in a fluid system. It is usually designed as a valve or device that automatically opens when the internal pressure of the system exceeds a set threshold, releasing some fluid to reduce the system pressure and protect the system from damage caused by excessive pressure. The selection of a pressure limiting valve needs to consider factors such as the pressure range of the system, flow requirements, medium characteristics, and safety standards.

[0003] However, most of the existing pressure limiting valve structures have the following problems:

[0004] In the existing simplified pressure limiting valve structure, the main function of the plug is to block the processing hole of the valve body and provide support for the spring at the same time. The plug itself is complex to process, uses more materials, and is expensive. And in the case of limited space, the edge of the plug end may press the spring and make it skewed, which easily makes the spring in an abnormal working state. From the perspective of the assembly method, the assembly action of the plug is relatively complex and takes a long time. The threads of the plug are prone to coating or aluminum chips falling off during processing, transportation, and assembly, affecting the cleanliness level.

[0005] Therefore, we make improvements and propose a simplified structure of a pressure limiting valve. Content of the Utility Model

[0006] The purpose of the utility model is to address the problems that currently exist in inconvenient protection and isolation of the equipment air outlet, and at the same time, the poor sealing effect affects the normal operation and use of the equipment.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A simplified structure of a pressure limiting valve to improve the above problems.

[0009] Specifically, this application is as follows:

[0010] It includes a valve body and a valve core. A valve core is arranged inside the valve body. The valve core is provided with a first exhaust hole and a second exhaust hole. A compression spring is fixedly connected inside the valve core, and a ball valve is fixedly connected to the compression spring. A through groove is provided on the valve body.

[0011] As a preferred technical solution of this application, the outer side surface of the valve core fits with the inner side surface of the valve body, and the length of the valve core is greater than the diameter of the through groove.

[0012] As a preferred technical solution of this application, the first exhaust holes are arranged on the valve core at equal angles.

[0013] As a preferred technical solution of the present application, the outer diameter of the compression spring is smaller than the inner diameter of the valve core.

[0014] As a preferred technical solution of the present application, the ball valve is connected in the valve body by interference fit.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the scheme of this application:

[0017] 1. A ball valve is provided; the simplified structure mainly uses a ball valve instead of a screw plug, which also achieves the effect of sealing the holes in the valve body, and the working length of the compression spring can be controlled by changing the press-fitting distance. The ball valve is a standard part with mature technology and does not require redevelopment. It has strong versatility, while the screw plug needs to be redeveloped to adapt to different working conditions, and the reliability verification process is relatively long. When the spherical surface of the ball valve contacts the compression spring, the force direction of the compression spring can be automatically aligned, which will not cause the compression spring to be skewed, thereby reducing the defective rate of the assembly process. The end of the screw plug cannot be hidden when space is limited, and it is easy to hold up the compression spring during assembly, resulting in poor assembly. The assembly process of the ball valve is simple and the rhythm is fast. The ball valve parts and the corresponding first exhaust holes can maintain a high level of cleanliness, and debris is not easily generated during processing, transportation, and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An overall three-dimensional structural schematic diagram of a simplified pressure-limiting valve structure provided in this application;

[0019] Figure 2 A schematic diagram of a side view of the valve core of a simplified pressure limiting valve structure provided in this application;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a ball valve with a simplified pressure-limiting valve structure provided in this application;

[0021] Figure 4 A cross-sectional view of a valve core of a simplified pressure-limiting valve structure provided in the present application.

[0022] Markings in the figure: 1. valve body; 2. valve core; 3. first exhaust hole; 4. second exhaust hole; 5. compression spring; 6. ball valve; 7. through groove. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0024] Accordingly, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1:

[0029] As Figures 1-4 shown, this embodiment proposes a simplified pressure limiting valve structure, including a valve body 1 and a valve core 2. The valve core 2 is arranged inside the valve body 1. A first exhaust hole 3 is opened on the valve core 2. A second exhaust hole 4 is opened on the valve core 2. A compression spring 5 is fixedly connected inside the valve core 2. A ball valve 6 is fixedly connected to the compression spring 5. A through groove 7 is opened on the valve body 1.

[0030] Embodiment 2:

[0031] The following further introduces the solution in Embodiment 1 in combination with a specific working mode, as detailed in the following description:

[0032] As Figure 2 shown, as a preferred embodiment, on the basis of the above method, further, the outer side surface of the valve core 2 fits with the inner side surface of the valve body 1, and the length of the valve core 2 is greater than the diameter of the through groove 7, which can ensure that the valve core 2 can slide smoothly and be limited inside the valve body 1.

[0033] As Figure 2As shown, as a preferred embodiment, on the basis of the above method, further, the first exhaust holes 3 are opened at equal angles on the valve core 2, which can ensure that the first exhaust holes 3 opened at equal angles can smoothly discharge excess gas.

[0034] like Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the outer diameter of the compression spring 5 is smaller than the inner diameter of the valve core 2, which can ensure that the compression spring 5 can be smoothly extruded and moved in the valve core 2.

[0035] like Figure 2 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the ball valve 6 is connected in the valve body 1 through an interference fit, which can ensure that the ball valve 6 connected in the valve body 1 through the interference fit can improve the firmness of the installation of the ball valve 6.

[0036] Specifically, when the simplified pressure limiting valve structure is used: Figures 1-4 The simplified structure mainly replaces the screw plug with a ball valve 6, which also achieves the effect of sealing the holes in the valve body 1, and the working length of the compression spring 5 can be controlled by changing the press-fitting distance. The ball valve 6 is a standard part with mature technology and does not need to be redeveloped. It has strong versatility, while the screw plug needs to be redeveloped to adapt to different working conditions, and the reliability verification process is relatively long. When the spherical surface of the ball valve 6 contacts the compression spring 5, the force direction of the compression spring 5 can be automatically aligned, and the force of the compression spring 5 will not be skewed, thereby reducing the defective rate of the assembly process. The end of the screw plug cannot be hidden when the space is limited, and it is easy to support the compression spring 5 during assembly, resulting in poor assembly. The assembly process of the ball valve 6 is simple and the beat is fast. The ball valve 6 parts and the corresponding first exhaust hole 3 can maintain a high level of cleanliness, and debris is not easy to generate during processing, transportation, and assembly.

[0037] When the pressure is high, the valve core 2 can be pushed to move in the valve body 1. When the valve core 2 moves, it can cooperate with the ball valve 6 to squeeze the compression spring 5. After the valve core 2 moves to the moving position, the first exhaust hole 3 on the valve core 2 is flush with the through groove 7, and the excess pressure can be discharged from the through groove 7. After the pressure is released, the valve core 2 is reset under the push of the compression spring 5. At the same time, the other end of the valve core 2 can be aligned with the through groove 7 through the second exhaust hole 4, and air can be introduced into the compression spring 5 to avoid the pressure affecting the normal reset of the valve core 2.

[0038] The above embodiments are only used to illustrate the present utility model and not to limit the technical solutions described in the present utility model. Although this specification has described the present utility model in detail with reference to the above respective embodiments, the present utility model is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present utility model; and all technical solutions and their improvements that do not depart from the spirit and scope of the utility model are covered by the scope of the claims of the present utility model.

Claims

1. A simplified pressure limiting valve structure, comprising a valve body (1) and a valve core (2), characterized in that, A valve core (2) is arranged inside the valve body (1). A first exhaust hole (3) is formed in the valve core (2), a second exhaust hole (4) is formed in the valve core (2), a compression spring (5) is fixedly connected inside the valve core (2), a ball valve (6) is fixedly connected to the compression spring (5), and a through groove (7) is formed in the valve body (1).

2. The simplified pressure limiting valve structure according to claim 1, wherein The outer side surface of the valve core (2) is in contact with the inner side surface of the valve body (1), and the length of the valve core (2) is greater than the diameter of the through groove (7).

3. A simplified pressure limiting valve structure according to claim 1, characterized in that, The first exhaust holes (3) are arranged on the valve core (2) at equal angles.

4. A simplified pressure limiting valve structure according to claim 1, characterized in that, The outer diameter of the compression spring (5) is smaller than the inner diameter of the valve core (2).

5. A simplified pressure limiting valve structure according to claim 1, characterized in that The ball valve (6) is connected inside the valve body (1) by interference fit.

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